Generator for Plain RSA keys


plainrsa_gen [-b bits] [-e pubexp] [-f outfile] [-h]

Runs on:

QNX Neutrino


-b bits
The bit length of the key. The default is 1024; the recommended length is 2048 or even 4096 bits. Note that generating longer keys takes more time.
-e pubexp
The value of the RSA public exponent. The default is 0x3.
Note: Don't change this unless you really know what you are doing!
-f outfile
Write the resulting key to outfile instead of to stdout. If the file already exists, it isn't overwritten, so that you won't accidentally lose your private key.
Display help.


You can use plainrsa_gen to generate Plain RSA keys for authentication purposes. Using Plain RSA keys is optional. Other possibilities are pre-shared keys or X.509 certificates.

Output file format

This is the secret private key that should never leave your computer:

: RSA   {
        # RSA 1024 bits
        # pubkey=0sAQOrWlcwbAIdNSMhDt...
        Modulus: 0xab5a57306c021d3523...
        PublicExponent: 0x03
        PrivateExponent: 0x723c3a2048...
        Prime1: 0xd309b30e6adf9d85c01...
        Prime2: 0xcfdc2a8aa5b2b3c90e3...
        Exponent1: 0x8cb122099c9513ae...
        Exponent2: 0x8a92c7071921cd30...
        Coefficient: 0x722751305eafe9...

The line pubkey=0sAQOrW... of the private key contains a public key that should be stored in the other peer's configuration in this format:

: PUB 0sAQOrWlcwbAIdNSMhDt...

You can also specify from and to addresses for which the key is valid: : PUB 0sAQOrWlcwbAIdNSMhDt...

Contributing author: